While printing, when your printer throws a message Canon Printer in Error State, it means something is wrong with your Canon printer system. Perhaps it has internal bugs that need to be eradicated earlier to restart the process of printing. Check the link that your computer and printer have built between the devices. If the communication problem is the reason why the printer is in an error state, then first fix the problem and then start printing something. One reason may also be the use of an obsolete printer driver for this error problem, so make sure that the driver installed in your device is up-to-date.